<?php
/**
 * Zend Framework
 * LICENSE
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 * @category Zend
 * @package Zend_Session
 * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
 * @license http://framework.zend.com/license/new-bsd New BSD License
 * @version $Id: Abstract.php 24593 2012-01-05 20:35:02Z matthew $
 * @since Preview Release 0.2
 */
/**
 *
 * @see Zend_Session_Validator_Interface
 */
require_once 'Zend/Session/Validator/Interface.php';

/**
 * Zend_Session_Validator_Abstract
 * @category Zend
 * @package Zend_Session
 * @subpackage Validator
 * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
 * @license http://framework.zend.com/license/new-bsd New BSD License
 */
abstract class Zend_Session_Validator_Abstract implements Zend_Session_Validator_Interface {

    /**
     * SetValidData() - This method should be used to store the environment variables that
     * will be needed in order to validate the session later in the validate() method.
     * These values are stored in the session in the __ZF namespace, in an array named VALID
     * @param mixed $data
     * @return void
     */
    protected function setValidData ($data) {
        $validatorName = get_class ($this);
        $_SESSION['__ZF']['VALID'][$validatorName] = $data;
    }

    /**
     * GetValidData() - This method should be used to retrieve the environment variables that
     * will be needed to 'validate' a session.
     * @return mixed
     */
    protected function getValidData () {
        $validatorName = get_class ($this);
        if (isset ($_SESSION['__ZF']['VALID'][$validatorName])) {
            return $_SESSION['__ZF']['VALID'][$validatorName];
        }
        return null;
    }

}
